marin (marine-sky-earth), zouzou, marin (umi monogatari), umi monogatari, 00s, 1girl, ;d, arms up, bikini, bikini tan, blonde hair, blush, breasts, brown eyes, female focus, front-tie bikini top, front-tie top, happy, high ponytail, long hair, milestone celebration, multicolored bikini, navel, one eye closed, open mouth, ponytail, side-tie bikini bottom, sky, smile, solo, string bikini, striped bikini, striped clothes, swimsuit, tan, tan tattoo, tanline, tattoo, thumbs up, underboob, upper body, v, watermark, web address, wink